> ? [some #traveler]

[pm#graph1_on_human_motion
     [any #human_motion (^$(no inheritance)$^),
          pm#from_place: a pm#spatial_object,
          pm#to_place: a pm#spatial_object,
          pm#departure_time: a pm#time_measure,
          pm#arrival_time: a pm#time_measure,
          #day_of_the_week: a #day_of_the_week,
          may have for pm#agent: a #person,
          may have for pm#instrument: a #vehicle,
          may have for pm#experiencer: several #passenger,
          may have for pm#purpose: a pm#situation,
          may have for pm#relation_from_situation (^$(explore)$^): a pm#thing]
];

[pm#graph1_on_flight
     [any #flight (^$(no inheritance)$^),
          pm#from_place: a pm#spatial_object,
          pm#to_place: a pm#spatial_object,
          #day_of_the_week: a #day_of_the_week,
          pm#via_place: a pm#spatial_object,
          pm#departure_time: a pm#time_measure,
          pm#arrival_time: a pm#time_measure,
          may have for pm#relation_from_situation (^$(explore)$^): a pm#thing,
          pm#agent: an #airplane_pilot,
          may have for pm#experiencer: several #passenger]
];

//Search time: 0.00025 s, printing time: 0.002 s (according to the Unix function gettimeofday())